PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3R5741Insert Plate,synchronizer,transm

Caterpillar Inc Div Caterpillar Defense · NSN 2520-00-981-8523 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-981-8523 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-981-8523. Primary manufacturer part number: 3R5741.
Features
  • Insert Plate,synchronizer,transm — FSC 2520
  • General Characteristics Item Description: MATL STEEL; CIRCULAR SHAPE W/CENTRAL APERTUREA; BODY OD 3-1/16-6 UN 2A; ID 2.290 IN.; H 1.075 IN. A
  • 2 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insert Plate,synchronizer,transm, cataloged under National Stock Number 2520-00-981-8523, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-981-8523
Primary Part Number3R5741
Item NameInsert Plate,synchronizer,transm
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
General Characteristics Item DescriptionMATL STEEL; CIRCULAR SHAPE W/CENTRAL APERTUREA; BODY OD 3-1/16-6 UN 2A; ID 2.290 IN.; H 1.075 IN. A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-222-1912 INTERCHANGEABLE
Nut,tube Coupling
Cross-Reference Index
Part NumberManufacturer
477634 Stewart-Warner Corporation (USA)
3R5741 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
4730-00-222-1912INTERCHANGEABLE
NUT,TUBE COUPLING

Frequently Asked Questions

What is NSN 2520-00-981-8523?

NSN 2520-00-981-8523 is a Insert Plate,synchronizer,transm, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-981-8523?

NSN 2520-00-981-8523 has 2 cross-referenced part numbers: 477634 (Stewart-Warner Corporation), 3R5741 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 2520-00-981-8523?

There is 1 known substitute for 2520-00-981-8523: 4730-00-222-1912. Verify interchangeability with system specifications before substitution.

What are the specifications of 3R5741?

Key specifications for 3R5741: General Characteristics Item Description: MATL STEEL; CIRCULAR SHAPE W/CENTRAL APERTUREA; BODY OD 3-1/16-6 UN 2A; ID 2.290 IN.; H 1.075 IN. A. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com